Б) 8у. Г) хуz. E) 3cd+3d. З) ad+acd
------ ; ------- ; --------- ; --------
4х-4у. xz-yz. 6cd-3d. abd-acd

1)8y/4(x-y)=2y/(x-y)2)xyz/z(x-y)=xy/(x-y)3)3d(c+1)/3d(2c-1)=(c+1)/(2c-1)4)ad(1+c)/ad(b-c)=(1+c)/(b-c)